Amerigo Vespucci was an Italian explorer, financier, navigator and cartographer. Amerigo lived March 9th, 1454 - February 22nd 1512. He was the first to demonstrate that Brazil and the West Indies didn't represent Asia's eastern outskirts. America was named after Amerigo.
Amerigo conjectured Columbus's voyages, but he ended up on an entire different landmass. This was the "New World" or what is better known now the 2nd super continent America.